17 |
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
18 |
Boston, MA 02111-1307, USA. */ |
Boston, MA 02111-1307, USA. */ |
19 |
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|
20 |
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/* |
21 |
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|
22 |
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@deftypefn Replacement void* xmalloc (size_t) |
23 |
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|
24 |
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Allocate memory without fail. If @code{malloc} fails, this will print |
25 |
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a message to @code{stderr} (using the name set by |
26 |
|
@code{xmalloc_set_program_name}, |
27 |
|
if any) and then call @code{xexit}. Note that it is therefore safe for |
28 |
|
a program to contain @code{#define malloc xmalloc} in its source. |
29 |
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|
30 |
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@end deftypefn |
31 |
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|
32 |
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@deftypefn Replacement void* xrealloc (void *@var{ptr}, size_t @var{size}) |
33 |
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Reallocate memory without fail. This routine functions like @code{realloc}, |
34 |
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but will behave the same as @code{xmalloc} if memory cannot be found. |
35 |
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|
36 |
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@end deftypefn |
37 |
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|
38 |
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@deftypefn Replacement void* xcalloc (size_t @var{nelem}, size_t @var{elsize}) |
39 |
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|
40 |
|
Allocate memory without fail, and set it to zero. This routine functions |
41 |
|
like @code{calloc}, but will behave the same as @code{xmalloc} if memory |
42 |
|
cannot be found. |
43 |
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|
44 |
|
@end deftypefn |
45 |
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|
46 |
|
@deftypefn Replacement void xmalloc_set_program_name (const char *@var{name}) |
47 |
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|
48 |
|
You can use this to set the name of the program used by |
49 |
|
@code{xmalloc_failed} when printing a failure message. |
50 |
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|
51 |
|
@end deftypefn |
52 |
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|
53 |
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@deftypefn Replacement void xmalloc_failed (size_t) |
54 |
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|
55 |
|
This function is not meant to be called by client code, and is listed |
56 |
|
here for completeness only. If any of the allocation routines fail, this |
57 |
|
function will be called to print an error message and terminate execution. |
58 |
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|
59 |
|
@end deftypefn |
60 |
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|
61 |
|
*/ |
62 |
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|
63 |
#ifdef HAVE_CONFIG_H |
#ifdef HAVE_CONFIG_H |
64 |
#include "config.h" |
#include "config.h" |
65 |
#endif |
#endif |
68 |
|
|
69 |
#include <stdio.h> |
#include <stdio.h> |
70 |
|
|
71 |
#ifdef __STDC__ |
#ifdef ANSI_PROTOTYPES |
72 |
#include <stddef.h> |
#include <stddef.h> |
73 |
#else |
#else |
74 |
#define size_t unsigned long |
#define size_t unsigned long |
120 |
else |
else |
121 |
allocated = (char *) sbrk (0) - (char *) &environ; |
allocated = (char *) sbrk (0) - (char *) &environ; |
122 |
fprintf (stderr, |
fprintf (stderr, |
123 |
"\n%s%sCannot allocate %lu bytes after allocating %lu bytes\n", |
"\n%s%sout of memory allocating %lu bytes after a total of %lu bytes\n", |
124 |
name, *name ? ": " : "", |
name, *name ? ": " : "", |
125 |
(unsigned long) size, (unsigned long) allocated); |
(unsigned long) size, (unsigned long) allocated); |
126 |
#else /* HAVE_SBRK */ |
#else /* HAVE_SBRK */ |
127 |
fprintf (stderr, |
fprintf (stderr, |
128 |
"\n%s%sCannot allocate %lu bytes\n", |
"\n%s%sout of memory allocating %lu bytes\n", |
129 |
name, *name ? ": " : "", |
name, *name ? ": " : "", |
130 |
(unsigned long) size); |
(unsigned long) size); |
131 |
#endif /* HAVE_SBRK */ |
#endif /* HAVE_SBRK */ |